See that white louvered box? Since November 2017, Sydney’s official temperatures have been recorded inside it at Observatory Hill. The screen is sited in what is the hottest available location at Observatory Hill, with heat reflecting from the adjacent old stone building and its tin roof only a few metres away directly to the south. BOM’s own parallel data shows that this new site records temperatures up to 3°C warmer than the previous location.
This has cooked Sydney’s temperature record – yet this cooked data is used in a study claiming Sydney’s summers are becoming longer.
https://x.com/craigkellyAFEE/status/2044312732984586638?s=20